Botnet Targets Major Web sites

"Blending in has traditionally been Pushdo's trademark: Although it's one of the top five spamming botnets, it's also one of the more under-the-radar botnets around. But this latest activity has researchers wondering how this massive surge of traffic, which resembles a distributed denial-of-service (DDoS) attack, would ultimately help its traffic blend in and become less detectable.

"Shadowserver says the traffic is technically an attack, even though it doesn't appear to be trying to knock the sites offline like a DDoS does. 'We find it hard to believe this much activity would be used to make the bots blend in with normal traffic, but at the same time it doesn't quite look like a DDoS either,' Adair says."

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